package com.oocl.sc.action;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class CartFilter implements Filter {
	
	private static final String SUCCESS = "{\"status\":\"1\"}";
	private static final String FAIL = "{\"status\":\"-1\"}";

	public CartFilter() {
	}

	public void destroy() {

	}

	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		HttpServletRequest servletRequest = (HttpServletRequest) request;
		HttpServletResponse servletResponse = (HttpServletResponse) response;
		HttpSession session = servletRequest.getSession();
		String account = (String) session.getAttribute("account");
		if (account != null) {
			chain.doFilter(request, response);
			servletResponse.getWriter().write(SUCCESS);
		}else{
			servletResponse.getWriter().write(FAIL);
		}		
	}

	public void init(FilterConfig fConfig) throws ServletException {

	}

}
